CN108389979B - A kind of electroluminescence display panel, preparation method and display device - Google Patents
A kind of electroluminescence display panel, preparation method and display device Download PDFInfo
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- CN108389979B CN108389979B CN201810187434.5A CN201810187434A CN108389979B CN 108389979 B CN108389979 B CN 108389979B CN 201810187434 A CN201810187434 A CN 201810187434A CN 108389979 B CN108389979 B CN 108389979B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
- H10K71/13—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
- H10K71/135—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing using ink-jet printing
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
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Abstract
The invention discloses a kind of electroluminescence display panel, preparation method and display devices, by forming each anode in each sub-pix of underlay substrate and forming pixel defining layer between each sub-pix, ink and anti-solvent are sprayed on the anode of each sub-pix using InkJet printing processes, and the underlay substrate for being coated with ink and anti-solvent is ultrasonically treated and is dried, form organic electro luminescent layer, cathode is formed in organic electro luminescent layer, forms electroluminescence display panel.Due to spraying ink and anti-solvent on the anode of each sub-pix using InkJet printing processes, is dissolved each other by anti-solvent with solvent and solute is insoluble or poorly soluble in the principle of anti-solvent that solute is precipitated.Keep Dispersion of Solute Matter uniform by ultrasonic treatment, then by being dried removal solvent and anti-solvent, improves the homogeneity of the film thickness for the organic electro luminescent layer being prepared, organic electro luminescent layer is avoided coffee ring effect occur.
Description
Technical field
The present invention relates to field of display technology, in particular to a kind of electroluminescence display panel, preparation method and display
Device.
Background technique
Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) display have low energy consumption, from
The advantages that luminous, wide viewing angle and fast response time, be one of the hot spot in current display research field, it is considered to be the next generation is aobvious
Show technology.
Currently, the thin film-forming method of the organic electro luminescent layer in OLED display mainly has vapor deposition mode and inkjet printing side
Formula.Wherein, it is formed a film using inkjet printing mode since its rate of film build is fast, stock utilization is higher, it is in large size to may be implemented,
It is considered as the important way that large scale OLED display realizes volume production.Usually when making organic electro luminescent layer, need pre-
Anode and the pixel defining layer for limiting each sub-pix region are first made on underlay substrate, are beaten later using ink-jet
Print technique is sprayed in the specific open area of corresponding sub-pix by ink jet printing device has electroluminescent organic material
Ink, to form organic electro luminescent layer.Wherein, ink is generally made of solute and solvent；Solute is generally organic electroluminescence
Luminescent material, solvent are generally the solution that electroluminescent organic material can be made to dissolve.Therefore, in order to remove solvent to dripping
It also needs to be dried after entering ink.However during drying process, due to ink and pixel defining layer contact position
Surface energy differential it is different, cause the solvent evaporation rate of ink margin and center different, so as to cause the organic electroluminescence hair after drying
Photosphere edge easy to form is high and the uneven film of intermediate thin, i.e. coffee ring effect, aobvious so as to cause the OLED being prepared
Show the poor display effect of device.
Summary of the invention
The embodiment of the present invention provides a kind of electroluminescence display panel, preparation method and display device, existing to solve
There is the problem of coffee ring effect caused by when removing solvent in technology.
Therefore, the embodiment of the invention provides a kind of preparation methods of electroluminescence display panel, comprising:
The figure of anode is being formed in each sub-pix of underlay substrate and pixel circle is formed between each sub-pix
The figure of given layer；
Ink and anti-solvent are successively sprayed in each sub-pix using InkJet printing processes；Wherein, in the ink
Solute be electroluminescent organic material, the anti-solvent is dissolved each other with the solvent in the ink, and the organic electroluminescent
Material slightly soluble does not dissolve in the anti-solvent；
The underlay substrate for being coated with ink and anti-solvent is ultrasonically treated and is dried, organic electroluminescent is formed
Layer；
The figure of cathode is formed in the organic electro luminescent layer.
Optionally, in above-mentioned preparation method provided in an embodiment of the present invention, described pair is coated with ink and anti-solvent
Underlay substrate is ultrasonically treated and is dried, and is specifically included:
Under conditions of temperature is 10~50 DEG C, the time is the first preset time, to the lining for being coated with ink and anti-solvent
Substrate is ultrasonically treated；
Under conditions of temperature is -50~0 DEG C, the time is the second preset time and vacuum, to the lining after ultrasonic treatment
Substrate is dried, and removal solvent and anti-solvent form organic electro luminescent layer.
Optionally, in above-mentioned preparation method provided in an embodiment of the present invention, first preset time be 0.5~
20min, second preset time are 0.5~30min.
Optionally, the substrate base in above-mentioned preparation method provided in an embodiment of the present invention, after described pair of ultrasonic treatment
After plate is dried, before the figure for forming cathode, further includes:
Under conditions of temperature is 60~290 DEG C, the time is third preset time, to the underlay substrate after drying process into
Row annealing.
Optionally, in above-mentioned preparation method provided in an embodiment of the present invention, the third preset time is 5~60min.
Optionally, in above-mentioned preparation method provided in an embodiment of the present invention, the solvent includes: toluene, chlorobenzene, phenyl
One of hexamethylene, methyl benzoate, aromatic hydrocarbon, aromatic ester and hexamethylene or combination；
The anti-solvent includes: one of methanol and dimethylformamide or combination.
Optionally, in above-mentioned preparation method provided in an embodiment of the present invention, the anti-solvent includes: toluene, chlorobenzene, benzene
One of butylcyclohexane, methyl benzoate, aromatic hydrocarbon, aromatic ester and hexamethylene or combination；
The solvent includes: one of methanol and dimethylformamide or combination.
Optionally, in above-mentioned preparation method provided in an embodiment of the present invention, the material of the anode includes electrically conducting transparent
Material.
Correspondingly, the embodiment of the invention also provides a kind of electroluminescence display panel, the electroluminescence display panels
It is prepared using any of the above-described kind of preparation method provided in an embodiment of the present invention.
Correspondingly, the embodiment of the invention also provides a kind of display devices, including above-mentioned electricity provided in an embodiment of the present invention
Photoluminescence display panel.
The present invention has the beneficial effect that:
Electroluminescence display panel, preparation method and display device provided in an embodiment of the present invention, by substrate base
Each anode is formed in each sub-pix of plate and forms pixel defining layer between each sub-pix, using InkJet printing processes each
Spray ink and anti-solvent on the anode of sub-pix, and to the underlay substrate for being coated with ink and anti-solvent carry out ultrasonic treatment and
It is dried, organic electro luminescent layer is formed, and form cathode in organic electro luminescent layer, to form electroluminance display
Panel.Wherein, due to spraying ink on the anode of each sub-pix using InkJet printing processes when forming organic electro luminescent layer
Water and anti-solvent are insoluble or poorly soluble in the original of anti-solvent with the solute to dissolve each other by the solvent in anti-solvent and ink and in ink
Reason, so that solute is precipitated.Also, by ultrasonic treatment, solute can be made to be uniformly dispersed on anode, and make solvent and anti-solvent
It is sufficiently mixed so that solute is comparatively fast precipitated, then by being dried removal solvent and anti-solvent, so as to so as to be prepared
The homogeneity of the film thickness of organic electro luminescent layer improves, and avoids organic electro luminescent layer from coffee ring effect occur, and then improve system
The display effect of electroluminescence display panel made of standby.
Detailed description of the invention
Fig. 1 is the flow chart of the preparation method of electroluminescence display panel provided in an embodiment of the present invention；
Fig. 2 a to Fig. 2 f is respectively the sectional structure that the electroluminescence display panel after each step has been executed in embodiment one
Schematic diagram.
Specific embodiment
In order to make the purpose of the present invention, the technical scheme and advantages are more clear, with reference to the accompanying drawing, to the embodiment of the present invention
The specific embodiment of the electroluminescence display panel of offer, preparation method and display device is described in detail.It should
Understand, preferred embodiment disclosed below is only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.And not
In the case where conflict, the features in the embodiments and the embodiments of the present application be can be combined with each other.Also, each layer is thin in each attached drawing
Film thickness and shape do not reflect the actual proportions for the electroluminescence display panel being prepared, and purpose is the schematically illustrate present invention
Content.
The embodiment of the invention provides a kind of preparation methods of electroluminescence display panel, as shown in Figure 1, the preparation method
It may include steps of:
S101, the figure that anode is formed in each sub-pix of underlay substrate and formation pixel circle between each sub-pix
The figure of given layer.
Specifically, using a patterning processes, the figure of each anode is formed in each sub-pix of underlay substrate.Wherein,
The material of anode may include transparent conductive material.Wherein, transparent conductive material may include tin indium oxide (ITO), indium oxide
One of zinc (IZO), carbon nanotube, graphene, nanogold and nano silver combine, and are not limited thereto.
Using a patterning processes, the figure of pixel defining layer is formed between each sub-pix.
S102, ink and anti-solvent are successively sprayed in each subpixel using InkJet printing processes；Wherein, molten in ink
Matter is electroluminescent organic material, and anti-solvent is dissolved each other with the solvent in ink, and electroluminescent organic material slightly soluble or is not dissolved in
Anti-solvent.
S103, the underlay substrate for being coated with ink and anti-solvent is ultrasonically treated and is dried, form Organic Electricity
Electroluminescent layer.
S104, the figure that cathode is formed in organic electro luminescent layer.
Specifically, using a patterning processes, the figure of cathode is formed in organic electro luminescent layer.Wherein, cathode
Material may include metal material.Wherein, metal material may include: one of gold, silver, copper, aluminium or combination.Alternatively, cathode
Material also may include transparent conductive material.Wherein, transparent conductive material may include ITO, IZO, carbon nanotube, graphite
One of alkene, nanogold and nano silver combine, and are not limited thereto.
Preparation method provided in an embodiment of the present invention, by formed in each sub-pix of underlay substrate each anode and
Pixel defining layer is formed between each sub-pix, sprays ink and anti-molten on the anode of each sub-pix using InkJet printing processes
Agent, and the underlay substrate for being coated with ink and anti-solvent is ultrasonically treated and is dried, organic electro luminescent layer is formed,
And cathode is formed in organic electro luminescent layer, to form electroluminescence display panel.Wherein, due to forming organic electroluminescence
When luminescent layer, ink and anti-solvent are sprayed on the anode of each sub-pix using InkJet printing processes, to pass through anti-solvent and ink
Solvent in water dissolves each other and the solute in ink is insoluble or poorly soluble in the principle of anti-solvent, so that solute is precipitated.Also, by super
Sonication can make solute be uniformly dispersed on anode, and be sufficiently mixed solvent with anti-solvent so that solute is comparatively fast precipitated, then
By being dried removal solvent and anti-solvent, so as to so that the film thickness for the organic electro luminescent layer being prepared homogeneity
It improves, organic electro luminescent layer is avoided coffee ring effect occur, and then improve the aobvious of the electroluminescence display panel being prepared
Show effect.
Currently, in practical applications, the component of ink is different, and the parameters such as boiling point and surface tension are also different.Wherein, it boils
The parameter of the different corresponding drying process of point is different.Also, the surface tension of ink is related to the material of pixel defining layer.Cause
This, needs to make the component of ink to be regulated and controled according to the material of pixel defining layer, and makes drying process according to the component of ink
Regulated and controled.Preparation method provided in an embodiment of the present invention is dissolved each other and in ink by using the solvent in anti-solvent and ink
Solute be insoluble or poorly soluble in the principle of anti-solvent so that solute is precipitated.Also, by ultrasonic treatment, solute can be made in sun
It is uniformly dispersed on extremely, and is sufficiently mixed solvent with anti-solvent so that solute is comparatively fast precipitated, then removes solvent by being dried
With anti-solvent, it can improve the homogeneity of the film thickness for the organic electro luminescent layer being prepared.It is multiple so as to not need
Miscellaneous drying process processing can remove solvent and anti-solvent.And the ink due to instillation can also be avoided to define with pixel
The problem of coffee ring effect caused by the effect of surface tension between layer.
In the specific implementation, in above-mentioned preparation method provided in an embodiment of the present invention, to being coated with ink and anti-solvent
Underlay substrate be ultrasonically treated and be dried, specifically include:
Under conditions of temperature is 10~50 DEG C, the time is the first preset time, to the lining for being coated with ink and anti-solvent
Substrate is ultrasonically treated.Solute can be made to be uniformly dispersed on anode in this way, and make solvent and anti-solvent be sufficiently mixed with
Solute is precipitated comparatively fast.Wherein, temperature can be set to 10 DEG C, 30 DEG C or 50 DEG C.First preset time can be set to 0.5~
20min.Specifically, the first preset time can be set to 0.5min, 10min or 20min.Certainly, above-mentioned temperature and first pre-
If the value of time can design determination according to actual application environment, it is not limited thereto.
Under conditions of temperature is -50~0 DEG C, the time is the second preset time and vacuum, to the lining after ultrasonic treatment
Substrate is dried, and removal solvent and anti-solvent form organic electro luminescent layer.Since -50~0 DEG C of temperature is lower,
The mixed solution of solvent and anti-solvent and solute can be made to be frozen into solid-state in this way, and make under conditions of vacuum solvent and anti-
The mixed solution of solvent distils, so that evenly dispersed solute be made to maintain original position, and then obtains solid-state in homogeneous thickness
Solute film.Wherein, temperature can be set to -50 DEG C, -30 DEG C or 0 DEG C.Second preset time can be set to 0.5~
30min.Specifically, the second preset time can be set to 0.5min, 10min, 20min or 30min.Certainly, above-mentioned temperature with
The value of second preset time can design determination according to actual application environment, be not limited thereto.
Further, in order to improve it is dry after solid-state solute film compactness, in the specific implementation, of the invention real
In the preparation method for applying example offer, after the underlay substrate after ultrasonic treatment is dried, in the figure for forming cathode
Before shape, can also include:
Under conditions of temperature is 60~290 DEG C, the time is third preset time, to the underlay substrate after drying process into
Row annealing.General annealing is to carry out hot plate baking to underlay substrate, and the warm-up movement of molecule can make when due to baking
Solute molecule arrangement is closer, and can also remove remaining a small amount of solvent or anti-solvent, after improving drying
The compactness of solid-state solute film, and then obtain the higher organic electro luminescent layer of compactness.In addition, can also be made by baking
Solute molecule is crosslinked, so as to prevent when preparing other film layers after forming organic electro luminescent layer, other film layers
Dissolution of the solution to organic electro luminescent layer.Wherein, it is 60 DEG C, 100 DEG C, 150 DEG C, 200 DEG C or 290 that temperature, which can be specifically set,
℃.Third preset time can be set to 5~60min.Specifically, third preset time can be set to 5min, 10min,
30min, 50min or 60min.Certainly, the value of above-mentioned temperature and third preset time can also according to actual application environment come
Design determines, is not limited thereto.
Generally, electroluminescent organic material includes: and can issue the macromolecule of light or small molecule under electric field action to have
Machine material.In InkJet printing processes, ink is formed generally by electroluminescent organic material to be dissolved in organic solvent
's.In the specific implementation, in above-mentioned preparation method provided in an embodiment of the present invention, solvent may include: toluene, chlorobenzene, benzene
One of butylcyclohexane, methyl benzoate, aromatic hydrocarbon, aromatic ester and hexamethylene or combination.Anti-solvent may include: methanol and
One of dimethylformamide or combination.At this point, electroluminescent organic material, which can choose, is dissolved in above-mentioned solvent, and insoluble
In or be slightly soluble in the organic material of above-mentioned anti-solvent.Determining for the organic material needs to be designed according to actual application environment really
It is fixed, it is not limited thereto.
Alternatively, in the specific implementation, anti-solvent may include: toluene, chlorobenzene, cyclohexylbenzene, methyl benzoate, fragrance
One of hydrocarbon, aromatic ester and hexamethylene or combination.Solvent may include: one of methanol and dimethylformamide or combination.
At this point, electroluminescent organic material, which can choose, is dissolved in above-mentioned solvent, and having for above-mentioned anti-solvent is not dissolved in or is slightly soluble in
Machine material.Determining for the organic material needs to design determination according to actual application environment, is not limited thereto.
In practical applications, in order to improve the luminous efficiency of organic electro luminescent layer, hole injection layer, sky are generally also set up
The functional layers such as cave transport layer, electron injecting layer and electron transfer layer.In the specific implementation, on provided in an embodiment of the present invention
State in preparation method, formed pixel defining layer figure after, spraying ink and anti-solvent before, can also include: according to
The secondary figure for forming hole injection layer and hole transmission layer in each subpixel.Wherein, hole injection layer and hole transmission layer
Material can with it is in the prior art essentially identical, be not limited thereto.
It can also include: successively in each sub- picture before the figure for forming cathode after forming organic electro luminescent layer
The figure of electron transfer layer and electron injecting layer is formed in element.Wherein, the material of electron transfer layer and electron injecting layer can be with
It is in the prior art essentially identical, it is not limited thereto.
Enumerate the preparation method of electroluminescence display panel below by a specific embodiment, but reader should be advised that, it is specific
Preparation process is not limited to this.
The preparation method of electroluminescence display panel provided in an embodiment of the present invention, may include steps of:
(1) patterning processes are used, form the figure of each ito anode 111 in each sub-pix 110 of underlay substrate 100
Shape；As shown in Figure 2 a.
(2) patterning processes are used, form pixel defining layer 120 between each sub-pix 110 of underlay substrate 100
Figure；As shown in Figure 2 b.
(3) ink 1121 is sprayed in each sub-pix 110 using InkJet printing processes；As shown in Figure 2 c.
(4) anti-solvent 1122 is sprayed in each sub-pix 110 using InkJet printing processes；As shown in Figure 2 d.
(5) under conditions of temperature is 30 DEG C, the time is 20min, to the underlay substrate for being coated with ink and anti-solvent, i.e.,
Underlay substrate obtained in step (4) is ultrasonically treated, so that solute is uniformly dispersed on anode, and make solvent and anti-solvent
It is sufficiently mixed so that solute is comparatively fast precipitated.
(6), under conditions of temperature is -30 DEG C, the time is 30min, the underlay substrate after ultrasonic treatment is dried
Processing forms organic electro luminescent layer 112 to remove solvent and anti-solvent；As shown in Figure 2 e.
(7), it under conditions of temperature is 290 DEG C, the time is 60min, anneals to the underlay substrate after drying process
Processing.To improve the film layer compactness of organic electro luminescent layer, and further remove solvent and anti-solvent.
(8) patterning processes are used, form the figure of cathode 113 in organic electro luminescent layer 112；Such as Fig. 2 f institute
Show.
Specifically, the cathode of formation can be a whole face structure.Or, or the bulk being electrically connected to each other.Specifically
It needs to design determination according to actual application environment, be not limited thereto.
It should be noted that patterning processes can only include photoetching in above-mentioned preparation method provided in an embodiment of the present invention
Technique, or, may include photoetching process and etch step, while can also include printing, ink-jet etc. other be used to form it is pre-
The technique for determining figure；Photoetching process, which refers to, utilizes photoresist, mask including technical process such as film forming, exposure, development, heat bakings
The technique of the formation figure such as plate, exposure machine.In the specific implementation, can according to the present invention formed in the corresponding structure of structure choice
Figure technique.
Based on the same inventive concept, above-mentioned provided in an embodiment of the present invention is used the embodiment of the invention also provides a kind of
A kind of electroluminescence display panel that preparation method is prepared.The electroluminescence display panel can wrap as shown in figure 2f
It includes: underlay substrate 100, multiple sub-pixes 110 on underlay substrate 100 and the pixel between each sub-pix 110
Define layer 120, each sub-pix 110 include the anode 111 being sequentially located on underlay substrate 110, organic electro luminescent layer 112 and
Cathode 113.
The principle that the electroluminescence display panel solves the problems, such as is similar to aforementioned preparation method, therefore the electroluminescent is aobvious
Show that the implementation of panel may refer to the implementation of aforementioned preparation method, repeating place, details are not described herein.
Based on the same inventive concept, the embodiment of the invention also provides a kind of display devices, including the embodiment of the present invention to mention
The above-mentioned electroluminescence display panel supplied.The display device can be with are as follows: mobile phone, tablet computer, television set, display, notebook
Any products or components having a display function such as computer, Digital Frame, navigator.Other for the display device must can not
Few component part is it will be apparent to an ordinarily skilled person in the art that having, and this will not be repeated here, also be should not be used as pair
Limitation of the invention.The implementation of the display device may refer to the embodiment of above-mentioned electroluminescence display panel, repeat place not
It repeats again.
Electroluminescence display panel, preparation method and display device provided in an embodiment of the present invention, by substrate base
Each anode is formed in each sub-pix of plate and forms pixel defining layer between each sub-pix, using InkJet printing processes each
Spray ink and anti-solvent on the anode of sub-pix, and to the underlay substrate for being coated with ink and anti-solvent carry out ultrasonic treatment and
It is dried, organic electro luminescent layer is formed, and form cathode in organic electro luminescent layer, to form electroluminance display
Panel.Wherein, due to spraying ink on the anode of each sub-pix using InkJet printing processes when forming organic electro luminescent layer
Water and anti-solvent are insoluble or poorly soluble in the original of anti-solvent with the solute to dissolve each other by the solvent in anti-solvent and ink and in ink
Reason, so that solute is precipitated.Also, by ultrasonic treatment, solute can be made to be uniformly dispersed on anode, and make solvent and anti-solvent
It is sufficiently mixed so that solute is comparatively fast precipitated, then by being dried removal solvent and anti-solvent, so as to so as to be prepared
The homogeneity of the film thickness of organic electro luminescent layer improves, and avoids organic electro luminescent layer from coffee ring effect occur, and then improve system
The display effect of electroluminescence display panel made of standby.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (9)
1. a kind of preparation method of electroluminescence display panel characterized by comprising
The figure of anode is being formed in each sub-pix of underlay substrate and forms pixel defining layer between each sub-pix
Figure；
Ink and anti-solvent are successively sprayed in each sub-pix using InkJet printing processes；Wherein, molten in the ink
Matter is electroluminescent organic material, and the anti-solvent is dissolved each other with the solvent in the ink, and the electroluminescent organic material
Slightly soluble does not dissolve in the anti-solvent；
The underlay substrate for being coated with ink and anti-solvent is ultrasonically treated and is dried, organic electro luminescent layer is formed；
The figure of cathode is formed in the organic electro luminescent layer,
Wherein, it is coated with ink and the underlay substrate of anti-solvent is ultrasonically treated and is dried for described pair, specifically includes:
Under conditions of temperature is 10~50 DEG C, the time is the first preset time, to the substrate base for being coated with ink and anti-solvent
Plate is ultrasonically treated；
Under conditions of temperature is -50~0 DEG C, the time is the second preset time and vacuum, to the substrate base after ultrasonic treatment
Plate is dried, and removal solvent and anti-solvent form organic electro luminescent layer.
2. preparation method as described in claim 1, which is characterized in that first preset time is 0.5~20min, described
Second preset time is 0.5~30min.
3. preparation method as described in claim 1, which is characterized in that the underlay substrate after described pair of ultrasonic treatment is done
After dry processing, before the figure for forming cathode, further includes:
Under conditions of temperature is 60~290 DEG C, the time is third preset time, the underlay substrate after drying process is moved back
Fire processing.
4. preparation method as claimed in claim 3, which is characterized in that the third preset time is 5~60min.
5. preparation method as described in claim 1, which is characterized in that the solvent include: toluene, chlorobenzene, cyclohexylbenzene,
One of methyl benzoate, aromatic hydrocarbon, aromatic ester and hexamethylene or combination；
The anti-solvent includes: one of methanol and dimethylformamide or combination.
6. preparation method as described in claim 1, which is characterized in that the anti-solvent includes: toluene, chlorobenzene, phenyl hexamethylene
One of alkane, methyl benzoate, aromatic hydrocarbon, aromatic ester and hexamethylene or combination；
The solvent includes: one of methanol and dimethylformamide or combination.
7. preparation method as claimed in any one of claims 1 to 6, which is characterized in that the material of the anode includes electrically conducting transparent
Material.
8. a kind of electroluminescence display panel, which is characterized in that the electroluminescence display panel uses claim 1-7 such as to appoint
Preparation method described in one is prepared.
9. a kind of display device, which is characterized in that including electroluminescence display panel as claimed in claim 8.
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| CN109585654A (en) * | 2018-11-30 | 2019-04-05 | 合肥鑫晟光电科技有限公司 | Organic layer and preparation method, directive property thermal source component, display panel |
| CN111384309B (en) * | 2018-12-29 | 2021-04-06 | Tcl科技集团股份有限公司 | Post-processing method of quantum dot light-emitting diode |
| CN111384308B (en) * | 2018-12-29 | 2021-05-28 | Tcl科技集团股份有限公司 | Preparation method of quantum dot light-emitting diode |
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